Heating apparatus.



PATENTED JAN. 2, 1906.

" 0. s. MoGURDY.

HEATING APPARATUS.

APPLIOATION FILED AUG, 29, 1904.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed August 29, 1904. -Serial No. 222,485.

To aZZ whom it may concern:

Be it known that I, OSCAR S. McCUnDY, a citizen of the United States, residing at Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Heating Apparatus, of which the following is a specification, reference being had therein to the accompanying drawings, forming part of this specification, in which Figure 1 is a sectional view of my improved heating apparatus and the connected register-actuated controlling mechanism. Fig. 2 is a detail view showing the register opened. Fig. 3 is a similar view showing the register closed. Fig. 4 is a similar view showing horizontally-dis osed connections and sheave-wheels there or. Fig. 5 is a horizontal sectional View on the line V V of Fig. 1, showing the air-damper opened. Fig. 6 is a similar view showing the damper closed. Fig. 7 is a cross-sectional detail viewon the line VII.

Myinvention relates to apparatus for heating buildings, and particularly to means incorporated with the heater whereby the supply of fuel and air furnished to the heating apparatus is controlled by the valve or register regulating the volume or current of heated air.

Referring to the drawings, 2 is a casing of sheet-iron or other material of any suitable form or shape provided with a cold-air-inlet pipe 3, leading to its lower portion from any source, as the outside of a building. The inlet-pipe may, however, be omitted, if desired, and one or more air-openings left in the casing 2, as will be readily understood. The lower portion of the casing is formed by a bottom plate 4, upon which the heater 5, with its radiating flue-to 5, is mounted, to which gaseous fuel is supp ied by a series of burners 6, opening upwardly through the bottom4 from a valve 7, to which gas or other fluid fuel is supplied, as by a pipe 8. 9 is a pilotlight burner also connected with the valve 7, having a continuous supply and extending upwardly through the bottom 4, as shown, so as to always furnish ignition for the burners 6, air being supplied thereto through a normally open port 9. The valve 7 is supported fromthe bottom 4 in any suitable manner, as by a bolt 10. Rotatablymounted upon the upper side of the bottom 4 is a damperplate 11, circular in form and conveniently fitting Within the shell of the heater 5 and, if

desired, centered upon the bolt 10. The 'damper 11 is provided with air-openings 12, while the bottom 4 is also provided with similar openings 13, such openings being disposed radially, and the damper-plate 11 is adapted to open and close these openings either entirely or within any desired degree. As shown in Figs. 5 and 6, clearance is pro- .vided for the burner and pilot-light pipes 6 and 9, so that the openin s 13 may be entirely closed without inter erence therewith. The damper-plate 11 is provided with a series of downwardly-proj ecting bevel-teeth 14, extending through an opening 15 in the bottom plate and in meshing engagement with a toothed segment 16, mounted upon the stem 17 of valve 7. V

18 refers to register-plates, located in any suitable position and within the usual casing, adapted to regulate the outward flow of the heated air passing upwardly within the easing 2to the room or chamber to beheated. These register-plates are rotatably mounted in suitable bearings and are connected at one or both sides of their pivotal center with connections 19 19, also connected at their other ends with a crank-arm 20, secured to stem 17 of the valve. These connections 19 may be rigid, if desired, and composed of heavy wire or rods, in which case but one may be employed, adapted to transmit motion to the crank 20 in either direction. In the construction shown, however, I have employed two connections, one at each side, in which case they may, if preferred, be flexible, operating alternately by tension. As thus constructed it will be seen that as the registers are opened or closed, either to their full extent or only partially, thesupply of fuel to the burner is regulated in a degree corresponding to the amount of opening provided through the register, while at the same time the amount of air passing upwardly through the bottom 4 to the burner-chamber is also proportionally regulated by means of the dam er 11. By these means an automatic reguiation of the fuel and air to the burner is secured in proportion to the amount of heated air desired to pass through the register.

In Fig. 4 I have shown an arrangement whereby the direction of the flexible connections 19 may be Varied from the perpendicular and extended in any desired direction from the registers 18 to the valve-crank 20 by passing them. around grooved sheavewheels 23, as will be readily understood.

IIO

Extending across the upper portion of the shell 2, which may be of any height, according to the distance above the heater that the hot air is taken off, is aperforated late or Wire netting 21 for the full area un erneath the register, the object of which is to prevent the passage downwardly of foreign matter, dirt, &c., into the heater-chamber as will be read ily understood. For the purpose of deflecting the cold air coming into shell 2 from coldair pipe 3, I have provided an interior deflector, consisting of the baffle-plate 22, extending entirely around the inside area of the shell 2 and terminating within a short dis tance of the bottom 4, preferably slanting inwardly and made in the form of an inverted truncated cone. By this construction the cold air will be deflected downwardly toward the base of the heater, as indicated by the arrows in Fig. 1, thereby taking up the maximum amount of heat in its circulation around the heater 5 and radiator 5.

The heater and burner indicated are of the type and similar in construction to that shown in my prior patent, No. 769,318, dated September 6, 1904, although it will be understood that any suitable form of heating apparatus, around which the air may circulate and to which fuel may be supplied generally in the manner indicated, will operate in the same manner and for the same purpose as the heating device shown and described, and I do not, therefore, desire to be limited to such form of heater per 86.

When the register is closed, the gas is entirely cut off except to the pilot-light burner 9, and when the register is opened full the full flow of gas is thrown on, while at intermediate positions of the register-gates the burners are supplied with a proportionally greater or less amount, as has been described. Thus it will be seen that the desired amount of heat can readily be secured by opening or closing the register as much or little as re quired, which movement is followed by a corresponding movement of the burner-valve and of the air-damper, causing an increase or diminution of the fuel and air supplied for combustion. The apparatus is very economical of fuel, and as a separate heater may be furnished for each room or chamber of a dwelling the temperature may be readily controlled therein independent of other rooms.

The entire device is very small and com pact, simple and chea in construction, not liable to get out of or er, and will commend itself to users of heat-generating apparatus.

It will be understood that other designs of burner, shell, casing, or register may be em ployed or other details of construction substituted or various changes and modifications may be made in the apparatus by the skilled mechanic; but all such are to be considered as within the scope of the following claims.

What I claim is 1. In air-heating apparatus, the combina tion of a heater, a surrounding air shell, a register-valve controlling the outflow therefrom, a burnervalve, a combustion airdamper gearing connecting the burner-valve and air-damper, and means connected with the register-valve controlling the fuel and combustion air-supply, substantially as set forth.

2. In air-heating apparatus, the combination of a heater, a surrounding air-shell, a register-valve controlling the outflow therefrom, a burner-valve, a combustion air-damper, a fuel-valve stem provided with gearing in operative engagement with the air-damper, and connections between the valvestem and the register-valve, substantially as set forth.

3. In air-heating apparatus, the combination of a heater, a surrounding air-shell, a pivoted register-valve controlling the outflow of the heated air, a burner-valve, a rotatable combustion air-damper provided with gear-teeth, a valve-stem provided with teeth engaging the damper-teeth and having a turning-arm, and connections between the register-valve and said arm, substantially as set forth.

4. In air-heating apparatus, the combination of a heater, a surrounding air-shell, a pivoted register-valve controlling the outflow of the heated air, a burner-valve having a variable-supply burner-outlet and a constantsupply pilot-outlet, a rotatable combustion air-damper provided with gear-teeth, a valvestem provided with teeth engaging the damper-teeth and having a turning-arm, and connections between the register-valve and said arm, substantially as set forth.

5. In air-heating apparatus, the combination of a heater, a surrounding air-shell, a pivoted register-valve controlling the outflow of the heated air, a burner-valve, a rotatable combustion air-damper provided with gearteeth, a valve-stem provided with teeth engaging the damper-teeth and having a turning-arm, and connections between the register-valve and said arm, substantially as set forth.

6. In air-heating apparatus, the combination with the air-heater, of a burner for heating the same, a valve for controlling the supply of fuel to the burner, a hot-air outlet from said heater, a valve in said outlet for controlling the flow of hot air therefrom into the place to be heated, an air-damper, a burnervalve stem having gear-teeth in rotatable engagement with said damper, and connections between the said hot air valve and said burner-valve whereby the flow of fuel and air to the burner may be controlled by the movement of the hot-air valve, substantially as set forth.

7. In air-heating ap aratus, the oombinagagement with the damper, substantially as tion with a burner an heater chamber, of a set forth. [0 base-plate provided with air-supply open- In testimony whereof I affix my signature ings, a damper mounted thereon provided in presence of two witnesses.

5 with registerin air-openings, a burner-valve OSCAR S. MoCURDY.

provided with el-supply pipes opening into Witnesses: the heater-chamber, and a valve-stem for LUVIA F. CRAWFORD,

said valve having gear-teeth inoperative en- SAMUEL D. WILSON. 

